For Clarinet Choir-There???s a Boat Dat???s Leavin??? Soon for New York/It Ain???t Necessarily So/Summertime/I Got Plenty o' Nuttin??? is a song from the American opera Porgy and Bess composed in 1935 by George Gershwin (1898-1937) to a libretto by DuBose Heyward and his brother Ira Gershwin after Heyward???s novel Porgy - a story about the love between the crippled negro beggar Porgy and the girl Bess in the city of Charleston in South Carolina. The premi?re - not a huge success - took place on 10 October 1935 in New York.With his opera Gershwin wanted to gain recognition as a composer of classical music. Incidentally he demanded that all parts were sung by black performers; only a few unimportant parts without sung lyrics were allowed to be performed by white actors. This rule still applies: Gershwin has stated in the terms of his will that only black people were allowed stage the opera.Porgy and Bess has become popular only after Gershwin???s death. In 1959 a wonderful film was made; the soundtrack won a Grammy Award. The work is not very often performed possibly because of the difficulty of finding a whole cast of black opera singers. However various pieces from the opera are still regularly performed in numerous arrangements.